How long to leave silicone before showering

The levels of humidity and heat in the room affect the drying process. In a humid room, caulk will normally dry at the speed indicated in the manufacturer's instructions.

However, in a dry room or in cooler weather when the air tends to be dryer, curing can take up to two to three times longer.

If you think the space where you're using the caulk is going to have a lower humidity, check the manual and any manufacturer information online to see how to compensate for a longer potential curing time.

While it might seem that applying a heat gun to the line of caulk will promote faster drying and curing, this isn't the case.

The compounds in the caulk actually soften when heat is applied, which will affect the seal between the silicone caulk and the surfaces it's meant to join. In fact, heat is often used to help with old caulking removal, so using a hair dryer or a heat gun can actually disrupt the process.